The investment seeks daily investment results, before fees and expenses, of 300% of the performance of the S&P MidCap® 400 Index. The fund, under normal circumstances, creates long positions by investing at least 80% of its assets in the securities that comprise the S&P MidCap® 400 Index ("index") and/or financial instruments that provide leveraged and unleveraged exposure to the index. The index measures the performance of the mid-cap segment of the U.S. equity universe, which is a capitalization-weighted index composed of 400 domestic common stocks. The fund is non-diversified.